Siemens Simatic ET 200SP Equipment Manual page 50

Parameters/address space
4.7 Behavior at the counting limits
Examples
The figure below shows an example for terminating the counting process after an overflow
and setting the counter to the start value:
The figure below shows an example for continuing the counting process after an overflow
and setting the counter to the start value:
The figure below shows an example for terminating counting after an overflow and setting
the counter to the opposite counting limit:
48
ET 200SP F-TM Count 1x1Vpp sin/cos HF (6ES7136-6CB00-0CA0)
Equipment Manual, V1.0, 01/2021, A5E47073911-AA